#include<stdio.h>
int main(){
    int x, y;
    printf("Please enter x:\n");
    scanf("%d",&x);
    if(x < 1)
        printf("y = %d\n",y = x);
    if(x >= 1 && x < 10)
        printf("y = %d", y = 2 * x - 1);
    if(x >= 10)
        printf("y = %d",y = 3 * x - 11);
    return 0;
}
